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Home >> Cadillac >> 2003 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 459 (Antilock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0283 (W/JL4): Mode Switch Circuit Malfunction >> Test Description
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Test Description

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The number below refers to the step number on the diagnostic table.

  1. 4:  This step tests the traction control switch circuitry. If the fuse opens when you perform this test, the traction control switch signal circuit is shorted to ground.
DTC C0283 (W/JL4)

Step Action Yes No
Schematic Reference:  ABS Schematics  
Connector End View Reference:  ABS Connector End Views  
1 Did you perform the ABS Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - ABS (W/O JL4)  or Diagnostic System Check - ABS (W/JL4) 
2
  1. Use a scan tool in order to clear the DTCs.
  2. Turn OFF the ignition for 5 seconds.
  3. Turn ON the ignition for up to 20 seconds.
Does the DTC set?		 Go to Step 3  Go to Diagnostic Aids
3
  1. Turn OFF the ignition.
  2. Disconnect the traction control switch harness connector. Refer to Traction Control Switch Replacement (Stabilitrak)  or Traction Control Switch Replacement (Traction Control ) .
  3. Turn ON the ignition.
  4. Connect a test lamp between the ignition 3 voltage circuit and a good ground.
Does the test lamp illuminate?		 Go to Step 4  Go to Step 8 
4 
  1. Use the scan tool in order to clear the DTCs.
  2. Turn OFF the ignition.
  3. Connect a fused jumper wire between the ignition 3 voltage circuit and the traction control switch signal circuit at the traction control switch harness connector.
  4. Turn ON the ignition for up to 20 seconds.
Does the DTC set?		 Go to Step 5  Go to Step 9 
5 Test the traction control switch signal circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 6 
6 Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 7 
7
IMPORTANT: Following EBCM replacement, perform the set-up procedure for the EBCM and perform the Yaw Rate Reference Table Reset Procedure. Use the scan tool to perform the Tire Size Calibration procedure.
Replace the EBCM. Refer to Electronic Brake Control Module Replacement (w/ JL4)  or Electronic Brake Control Module Replacement (w/o JL4) .Did you complete the replacement?		 Go to Step 11  -
8 Repair the open in the ignition 3 voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 11  -
9 Inspect for poor connections at the harness connector of the traction control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 10 
10 Replace the traction control switch. Refer to Traction Control Switch Replacement (Stabilitrak)  or Traction Control Switch Replacement (Traction Control ) .
Did you complete the replacement?		 Go to Step 11  -
11
  1. Use the scan tool to clear the DTCs.
  2. Turn OFF the ignition for 5 seconds.
  3. Turn ON the ignition.
  4. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 3  System OK
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